HTTP 402 Payment Standard

Monetize APIs with instant
USDC payments

Apex402 is a Solana-native payment gateway for APIs, AI agents, datasets, tools, and digital services. Create paid endpoints, verify payments, and let agents access your services through the 402 payment standard.

API Request
→
402 Payment Required
→
USDC Payment
→
Verified Receipt
→
Access Granted
⚡ Solana Native 💵 USDC Payments 🤖 Agent Ready 📡 402 Standard 🚫 No Subscriptions
Request Status402Payment Required response generated instantly
Settlement AssetUSDCSolana-native payments direct to creator treasury
Access ControlVerifiedReceipt-based unlock for APIs and digital services
Features

Everything you need to monetize APIs

Apex402 handles the payment layer so you can focus on building great services.

Paid API Endpoints

Turn any API into a paid endpoint. Set a USDC price per request and let Apex402 handle payment verification before access.

Agent-Friendly Payments

AI agents can discover, pay, and access services automatically without manual accounts, cards, or billing flows.

USDC Settlement

Receive payments directly in USDC on Solana with fast settlement and low transaction costs.

Receipt Verification

Every request can be verified through payment receipts, preventing unpaid access and protecting origin APIs.

Digital Goods

Sell datasets, prompts, automation tools, research reports, AI workflows, private APIs, or downloadable files.

Creator Dashboard

Manage endpoints, pricing, revenue, usage analytics, customers, receipts, and access rules from one interface.

How It Works

Four steps to paid APIs

From wallet connect to verified access in minutes.

1

Connect Wallet

Connect a Solana wallet to create and manage paid services.

2

Create Endpoint

Add an origin API URL, set a price in USDC, and configure access rules.

3

Payment Required

When a user or AI agent calls the endpoint, Apex402 returns a 402 response.

4

Pay & Access

After USDC payment is verified, Apex402 unlocks the response and stores the receipt.

Use Cases

Built for builders, agents, and creators

🤖

AI Agent Tools

Let autonomous agents pay for APIs, data, and execution tools.

📊

Premium Data APIs

Monetize market data, crypto signals, analytics, research, and private databases.

⚙️

Compute & Automation

Sell access to compute-heavy tasks, scraping tools, and AI processing.

📁

Digital Products

Sell prompts, files, templates, reports, datasets, and private resources.

🌐

Web3 SaaS

Add crypto-native pay-per-request monetization to existing SaaS products.

Marketplace

Discover paid APIs built for agents

Browse monetized APIs, tools, datasets, and services accessible through USDC payments.

$APEX

Protocol Token Utility

$APEX is designed to align incentives across the Apex402 ecosystem.

Protocol access
Endpoint listing priority
Creator rewards
Marketplace incentives
Fee discounts
Governance (upcoming)
Agent discovery boosts
Roadmap

Building the payment layer

Phase 1

Foundation

Website, docs, wallet connect, endpoint creation, marketplace preview

Phase 2

Infrastructure

Solana USDC payment verification, receipt system, API proxy gateway

Phase 3

Developer Tools

SDK, webhook events, credit packs, private endpoint access

Phase 4

Growth

Agent marketplace, token utility, creator rewards, advanced analytics

Ready to monetize your APIs?

Create your first paid endpoint in minutes. No subscriptions, no credit cards — just USDC payments on Solana.

Marketplace

Discover paid APIs built for agents

Browse monetized APIs, tools, datasets, and services accessible through USDC payments.